Calk attachment for boots



"W 1645 111 Oct. 11, 1927. J. MICHELSEN y 1 1 CLK ATTACHMENT FOR BOOTSFiled March 8, 1926 Arrone/Vey? Patented Oct. 11, 1927.

UNITED STATES,

JOHN MICHELSE'N, 0F VANCOUVER, BRITISH COLUMBIA, CANADA.

CALK ATTACHMENT FCR BOOTS.

Application filed-.March 8, 1929.

My invention relates to. improvements in call attachments for boots, theobjects of which are to provide meansI whereby the at'- tachment maybeadjusted to lit a. variety of shapes and sizes ofk boots, and maybesecurely yet detachably secured.thereto.Ak Furthery objects are toprovide means whereby the clamping boltl is held against detachment fromthe device, so that no parts may be lost, rendering the attachmentincomplete when required for fitting to other boots.

The invention consists essentially of a pair of scissor like membersfitted with calks and adjustable clips which are adapted to be fastenedto the sole and heel of a rubber or other boot by drawing one end of themembers towards each other by means of a bolt or other suitablefastening, as will be more fully described in the followingspecification in which Fig. 1 is a side view of the invention.

Fig. 2 is a plan view showing the attachment secured to the sole andheel of a rubber` boot, with the heads of some of the rivets removed toshow the clip adjusting means.

Fig. 3 is an enlarged detail view of the clamping means taken on theline 3-3 of Figure 2.

In the drawings like characters of reference indicate correspondinglparts in each figure.

The numeral 1 indicates generally a boot, having a sole 2, an arch 3,and a heel a. The numeral 5 indicates generally the attachment which isformed with a pair of curved members 6 having calks 7 projectingdownwardly therefrom and preferably a plurality of apertures 8 adjacentVtheir rear ends of which they may be secured by screws to the. heel 4when intended for permanent attachment. The members 6 are slottedadjacent their forward ends, the slot in one member being formedlongitudinally of the device as at 9 and that in the other member beingformed transversely as at 10, shown in dotted line, through which slotsa rivet 11 is loosely carried, so that the ends of the attachment canmove about a variable fulcrum when being adjusted toV a boot.

The numeral 12 indicates a plurality of clips which are adapted toembrace the welt of the sole 2 and are each provided at their inner endswith a rivet 13 which projectsV through a slot 14 having two or morerightangular extensions 15, all of which are diagonally disposed withrespect to the boot Serial No. 93,294.

1 so that the extensions 1,5 vary in distance from the edge of the solepermitting therivet 13 to be held in whichever slotl is required tobring the` clip into properv grip.- ping contact with the Welt-of thesole.

The numeral 16 indicates a pair of clips which are adapted to grip. theheel-4,-V each of these clips is preferably provided with a diagonallydisposed slot 17 whose longitudinal axis is directed to the rear centreof the heel and which is fulcrumed upon a rivet 18 carried in the rearend of the member 6. The numeral 19 indicates a pair of clamps securedto the member 6, preferably formed of sheet metal downwardly turned attheir inner or opposing ends as at 20 and 21 respectively, the end 20being provided with an oval aperture 22 through which a bolt 23 isadapted to project. The end 21 is slotted to permit the passage andremoval of the bolt 23 and is turned outwards as at 24 to forni a lipfor the purpose of engaging one side of a nut 25 upon the bolt 23. Thebolt 23 is riveted up at its outer end to prevent the removal of the nut25. The clamps 19 are bent over at their outer ends as at 26 and areprovided with a pair of prongs 27 which are adapted to be drawn into thesides of the heel 4 of the boot as the bolt 23 is driven up into the nut25.

Having thus described the several parts of my invention I will nowbriefly explain its adjustment.

The attachment is laid upon the sole of the boot to be lit-ted and theclips 12 moved so that their rivets 13 come to rest in whichever slotextension 15 is required to give the proper spacing between the clips,so that when the attachmentl is drawn up to fixed position the soleshall be properly gripped thereby. The clips 16 are allowed to engagethe heel 4 when lying in a position approximately at right angles to thelength of Athe boot, so that as the bolt 23 is tightened the clips rideupon their rivet 18, the slots 17 moving` therealong until a position ofrest is attained, when it will loe found that the clips have assumed anangle converging towards the centre of the heel and the pulling strainof the clips at opposite ends of the boot is opposed. As the bolt 23 istightened, the prongs 27 are drawn into the sides of the heel soy as toprevent any adverse strain imposed upon the attachment from drawing itscentre portion downwards from the arch 3 of the boot.

y When removing the attachment the bolt 23 is slaclrened Within the nut25 which is allowed to be Withdrawn from the slotted usV end 2l of theclamp and the bolt remain in suspension, as shown in dotted line inFigure 3, within the oval aperture 22 of the end 2O and the members 6spread apart to release the several clipst'rom the boot, `What l claimas my invention is:

A calli attachment for boots comprising` a pair oi' relatively `movablemembers pro vided With clips for attaching same to the sole and heel ofa boot7 a pair of transverse plates fastened to the lower surfaces ofsaid members and arranged in alignment, said plates being:l positionedto liein proximity to the breast of the bootlieel and beingy bentrearwardly and inwardly at the outer ends to provide prongs adapted tobe imbedded in the sides of the heel when the plates and relativelymovable members are' drawn togetlier, the inner ends of said platesbeing bent to provide 'opposing parallel lugs and a vtiohtelling devicespassing through openings termed in said lugs and operable to draw thelugs and attached members together so as to imbed the prongs ot thepiates Within the heel of the boot as aforesaid.

v Dated at Vancouver, B. C., this 24th day

